Are you experiencing bizarre electrical issues in your Cadillac, Chevrolet, or GMC vehicle? Intermittent power windows, flickering lights, a malfunctioning security system, or even a no-start condition can often be traced back to a single component: a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it malfunctions, it can create a host of frustrating and difficult-to-diagnose problems. This replacement Body Control Module, part number 15093910, is the definitive solution to restore your vehicle’s proper function and reliability.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program each module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This critical step ensures that the BCM communicates perfectly with your vehicle’s existing systems, eliminating the need for an expensive trip to the dealership for programming. We load the latest software updates from GM, ensuring optimal performance and longevity.
We had a 2008 Cadillac DTS come in that was driving the owner crazy. The radio would randomly shut off, the driver’s side window would only work sometimes, and occasionally the car wouldn’t start, showing a ‘Service Theft System’ message. The owner had already replaced the battery and checked all the fuses. After connecting our diagnostic tool, we saw multiple communication errors pointing towards the BCM. Instead of a clear ‘BCM Failure’ code, it was a pattern of electronic chaos. Installing a VIN-programmed BCM like this one resolved all the issues instantly. It highlights how a single faulty module can cause a wide array of seemingly unrelated symptoms.
Why Choose Our Programmed Cadillac DTS BCM?
Choosing our pre-programmed BCM saves you time, money, and hassle. A module from a dealership would require towing your vehicle in for costly installation and programming. Our solution allows for a straightforward DIY or independent shop installation. Simply provide your VIN during checkout, and we handle the complex programming for you, making the replacement process as simple as possible.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights
- ✔ Power windows, locks, or mirrors working intermittently or not at all
- ✔ Malfunctioning radio or climate control display
- ✔ ‘Service Theft System’ or ‘Security’ light illuminated on the dash
- ✔ Unexplained battery drain when the vehicle is off
- ✔ Intermittent no-crank, no-start condition
- ✔ False warning lights or messages on the instrument cluster
Installation & Post-Install Procedures:
While this module is designed for a direct fit, some vehicles may require simple relearn procedures after installation to ensure all systems are synchronized. These can often be performed with a capable bi-directional scan tool.
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the new BCM with the airbag system. This is only required if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary for correct brake light and traction control operation.
Please note: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors various electronic accessories, such as power windows, locks, lights, wipers, and the security system. It acts as a central hub for these functions.
Is this BCM truly plug-and-play?
Yes, because we program it to your vehicle’s VIN, it is ready to be installed without requiring dealer programming. However, as noted, some minor post-installation relearn procedures for systems like the airbags or brake sensor may be necessary depending on your specific model.
How do I provide my VIN number?
You can add your vehicle’s 17-digit VIN in the notes section during checkout. If you forget, we will contact you via email after your purchase to request it before we can program and ship your module.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system issues and ‘Service Theft System’ messages. While other issues can cause this, replacing a known bad BCM with our programmed unit is a very effective solution for this problem.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.